Sludge Tanks & Hazardous Liquid Tanks

Sludge, a thick soft mud or other viscous liquids is typically the byproduct of wastewater treatment; industrial wastewater solids and settled suspension from potable water treatment are handled as hazardous waste. It often contains various types of pathogens as well as heavy metal contaminants and, in the case of industrial waste, chemical pollutants. Sludge contaminated by chemical pollutants or heavy metals, demands complex treatment.

Reducing the volume of sludge and its toxicity into a more convenient form for disposal is the goal of various treatment processes. Stabilization, drying, incineration, thickening and dewatering are some of the basic sludge treatment methods. Drying and incineration in most cases is cost-prohibitive due to the price of fuel and the requisite treatment of the combustion gases.

Stabilization involves either aerobic or anaerobic digestion. Aerobic stabilization requires aeration tanks. Anaerobic digestion produces methane and biogas (carbon dioxide). Sludge is a byproduct of aerobic and anaerobic digestion. Once digestion has occurred, the sludge is directed to sedimentation tanks for treatment.

Storage tanks for hazardous liquids come in various shapes and sizes, depending on their use. Such applications may include industrial waste containing heavy metals and toxic chemicals, along with flammable or combustible liquids; municipal wastewater containing fecal matter; sludge tanks; wastewater from manufacturing, pharmaceuticals and agricultural facilities.

Since 1970, Modutank Inc. has offered a selection of storage tanks and secondary containment systems suitable for most liquid hazardous material, sludge, water, chemical, fuel containment and seismic requirements. Composed of modular steel parts and fitted with various liner materials, our tanks feature rapid bolt-together assembly with hand tools. These hazardous material and sludge tanks can be installed free-standing on level, compacted surfaces, or permanently anchor-bolted to concrete footings. Modularity assures a wide range of sizes and capacities. Furthermore, our flat panel tanks can be configured in square, rectangular or special shapes for irregular sites. Floating covers, steel covers, double liners, inlet and outlet fittings, leak detection, drains, vents and other ancillaries are available.

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